The disk drive for /boot is not yet ready or not present

Fresh install of Ubuntu Server 12.04. 2 mdadm volumes, one for /boot and one for LVM for the rest of the system. At each boot this error shows up:

The disk drive for /boot is not yet ready or not present

If I choose manual recovery, I can do "mount /boot && exit" and the booting will continue just fine.

The patch at https://bugs.launchpad.net/ubuntu/precise/+source/mdadm/+bug/942106/comments/5 doesn't make any difference.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: mdadm 3.2.3-2ubuntu1 [modified: usr/share/initramfs-tools/scripts/local-premount/mdadm]
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic x86_64
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
CurrentDmesg:

Date: Wed Jul 4 13:01:21 2012
MDadmExamine.dev.sda1:
 /dev/sda1:
    MBR Magic : aa55
 Partition[0] : 1766117355 sectors at 30195395 (type cd)
 Partition[1] : 1684107116 sectors at 544165376 (type 72)
 Partition[2] : 20041 sectors at 1109413705 (type 45)
MDadmExamine.dev.sda2:
 /dev/sda2:
    MBR Magic : aa55
 Partition[0] : 11890 sectors at 1702131056 (type 20)
MDadmExamine.dev.sdb1:
 /dev/sdb1:
    MBR Magic : aa55
 Partition[0] : 1766117355 sectors at 30195395 (type cd)
 Partition[1] : 1684107116 sectors at 544165376 (type 72)
 Partition[2] : 20041 sectors at 1109413705 (type 45)
MDadmExamine.dev.sdb2:
 /dev/sdb2:
    MBR Magic : aa55
 Partition[0] : 11890 sectors at 1702131056 (type 20)
MachineType: Dell Inc. PowerEdge R210 II
ProcEnviron:
 LANGUAGE=en_US:
 TERM=xterm
 LANG=en_US
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-26-generic root=/dev/mapper/hostname--vg001-sys--root ro quiet splash vt.handoff=7
SourcePackage: mdadm
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/21/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.2.3
dmi.board.name: 09T7VV
dmi.board.vendor: Dell Inc.
dmi.board.version: A05
dmi.chassis.type: 23
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.2.3:bd07/21/2011:svnDellInc.:pnPowerEdgeR210II:pvr:rvnDellInc.:rn09T7VV:rvrA05:cvnDellInc.:ct23:cvr:
dmi.product.name: PowerEdge R210 II
dmi.sys.vendor: Dell Inc.
etc.blkid.tab: Error: [Errno 2] No such file or directory: '/etc/blkid.tab'